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CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-20311

Cisco IOS XE Software Web UI Denial of Service Vulnerability

Description

A vulnerability in the web-based management interface of Cisco IOS XE Software could allow an authenticated, remote attacker with low privileges to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient error handling in the web-based management interface. An attacker could exploit this vulnerability by authenticating with a malformed certificate. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Cisco Cisco IOS XE Software

Default version status: unknown

  • 17.3.1affected
  • 17.3.1aaffected
  • 17.3.2aaffected
  • 17.3.1waffected
  • 17.3.2affected
  • 17.4.1affected
  • 17.4.1aaffected
  • 17.3.1xaffected
  • 17.3.3affected
  • 17.5.1affected
  • 17.4.1baffected
  • 17.3.1zaffected
  • 17.4.2affected
  • 17.3.3aaffected
  • 17.3.5affected
  • 17.3.4affected
  • 17.5.1aaffected
  • 17.6.1affected
  • 17.3.4aaffected
  • 17.6.1aaffected
  • 17.7.1affected
  • 17.6.1xaffected
  • 17.6.2affected
  • 17.3.4caffected
  • 17.4.2aaffected
  • 17.3.4baffected
  • 17.7.1aaffected
  • 17.8.1aaffected
  • 17.6.3aaffected
  • 17.6.3affected
  • 17.7.2affected
  • 17.7.1baffected
  • 17.9.1waffected
  • 17.3.5aaffected
  • 17.6.1zaffected
  • 17.8.1affected
  • 17.9.1affected
  • 17.6.4affected
  • 17.3.5baffected
  • 17.9.1aaffected
  • 17.3.6affected
  • 17.10.1affected
  • 17.6.1z1affected
  • 17.10.1aaffected
  • 17.9.2affected
  • 17.6.5affected
  • 17.9.1xaffected
  • 17.9.1yaffected
  • 17.3.7affected
  • 17.9.2aaffected
  • 17.9.3affected
  • 17.11.1affected
  • 17.10.1baffected
  • 17.6.6affected
  • 17.9.1x1affected
  • 17.11.1aaffected
  • 17.9.3aaffected
  • 17.12.1affected
  • 17.3.8affected
  • 17.9.4affected
  • 17.12.1waffected
  • 17.9.1y1affected
  • 17.12.1aaffected
  • 17.9.5affected
  • 17.13.1affected
  • 17.12.1xaffected
  • 17.12.2affected
  • 17.14.1affected
  • 17.9.4aaffected
  • 17.3.8aaffected
  • 17.6.6aaffected
  • 17.6.5aaffected
  • 17.6.7affected
  • 17.15.1affected
  • 17.13.1aaffected
  • 17.12.2aaffected
  • 17.12.3affected
  • 17.12.1yaffected
  • 17.12.1zaffected
  • 17.9.5aaffected
  • 17.14.1aaffected
  • 17.9.5baffected
  • 17.6.8affected
  • 17.12.4affected
  • 17.9.6affected
  • 17.17.1affected
  • 17.16.1affected
  • 17.15.1waffected
  • 17.12.3aaffected
  • 17.9.5caffected
  • 17.15.1aaffected
  • 17.12.1z1affected
  • 17.15.2affected
  • 17.15.1baffected
  • 17.9.5daffected
  • 17.15.1xaffected
  • 17.9.6aaffected
  • 17.12.1z2affected
  • 17.6.8aaffected
  • 17.16.1aaffected
  • 17.15.3affected
  • 17.9.7affected
  • 17.12.5affected
  • 17.15.1yaffected
  • 17.9.5eaffected
  • 17.12.4aaffected
  • 17.15.2aaffected
  • 17.15.2caffected
  • 17.15.2baffected
  • 17.12.1z3affected
  • 17.9.5faffected
  • 17.12.4baffected
  • 17.12.5aaffected
  • 17.18.1affected
  • 17.12.6affected
  • 17.12.1z4affected
  • 17.9.8affected
  • 17.9.7aaffected
  • 17.15.3aaffected
  • 17.15.4affected
  • 17.12.5baffected
  • 17.15.3baffected
  • 17.18.1zaffected
  • 17.9.7baffected
  • 17.12.5caffected
  • 26.1.1affected
  • 17.18.1aaffected
  • 17.15.4aaffected
  • 17.18.2affected
  • 17.18.1waffected
  • 17.15.4baffected
  • 17.12.6aaffected
  • 17.12.7affected
  • 17.15.4caffected
  • 17.9.9affected
  • 17.12.5daffected
  • 17.15.4s1affected
  • 17.15.5affected
  • 17.12.1z5affected
  • 17.18.1xaffected
  • 17.12.1z6affected
  • 17.15.4daffected
  • 17.12.6baffected
  • 17.4.1caffected
  • 17.15.5aaffected
  • 17.18.1yaffected
  • 17.12.7aaffected
  • 17.18.3affected
  • 17.12.7baffected
  • 17.18.3aaffected
  • 26.1.1aaffected
  • 26.2.1eaaffected

References